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Last activity 2017-06-08 23:05:03 +0200 by Chris J

FCS errors only in last bit of CRC and not the rest of the packet

I am using the esb_tx example on an nRF51 DK board modified to send BLE advertising packets at 1 KHz.

I am receiving the packets on a BlueTooth sniffer. The contents of packets is fine, but about 5% of the ... (more)

102
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1
vote
2
answers
Last activity 2017-05-19 13:46:34 +0200 by Wojtek flag of Poland

Can nRF51422 or nRF51822 can be used as bluetooth device for Raspberry pi?

Can nRF51422 or nRF51822 can be used as bluetooth device for Raspberry pi?

As I can see on the terminal Linux, the hciconfig log says, raspberry pi 3's Bluetooth device is connected to board with UART Connection.

I'm ... (more)

57
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2
votes
2
answers
Last activity 2017-05-07 06:29:49 +0200 by RK flag of Singapore

How Can I limit Gatt Data bytes that I write? (Not With Zero-Fill)

I created an characteristic that has MAX_Length = 20 Bytes characteristic.

And When I'm trying to write less than 20bytes on this Characteristic, It Always send with 20Bytes with Zero filled data bytes.

For example, I'd like to write ... (more)

143
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no
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2
answers
Last activity 2017-04-27 23:43:20 +0200 by Jay Tyzzer

nrfgo studio doesn't see my custom board

Hello all,

I am trying to program my custom board using the debug out from the nrf51-DK. I connect all the needed pins and on the nrfgo select the Segger but when I do this my nrf51-DK resets and it ... (more)

62
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no
votes
1
answer
Last activity 2017-03-21 11:10:25 +0200 by Kristin flag of Norway

nRF51 DK won't connect with nRF Toolbox

Hello,

I'm wondering if my nRF DK51 is not broken as it behaves quite strange when trying to connect with a BLE Central (iOS and Android devices). For most of the part everything is ok (flashing, RTT, UART, BLE ... (more)

105
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no
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1
answer
Last activity 2017-01-19 11:41:53 +0200 by Sigurd flag of Norway

Looking for KiCad shield design for nRF51-DK (or nRF52-DK)

Our workshop is using custom PCBs for other manufacturer's developer kits, and I'd like to do a similar shield for our nRF51-DK boards. Can anyone provide a KiCad project file including schematic and board?

90
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1
vote
1
answer
Last activity 2017-01-02 13:33:59 +0200 by run_ar

What defines the RSSI update rate for nRF51 devices?

I'm working on a project based on the ble_app_uart_c central example in SDK 12.1. I'm polling the RSSI of a Nordic beacon using sd_ble_gap_rssi_get(), and the fastest update in RSSI I can get is between 60 and ... (more)

74
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no
votes
1
answer
Last activity 2016-12-14 05:23:27 +0200 by sonnyz

NRF51-DK programming custom board problem

I'm trying to program a nRF51822 custom board using Debug out pin P19 of NRF51-DK through Keil MDK, here is the problem I encounter:

To simplify I just use the simple blinky_s130_pca10028 project. First I compile and load the ... (more)

62
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1
vote
1
answer
Last activity 2016-12-12 13:30:27 +0200 by Ole Bauck flag of Norway

nRF51 DK Dimensions and Drawing Needed

I haven't been able to find a drawing file for the nRF51 Development Kit. Is there one out there?

Ideally, I'd like to get the drawing and a *.STP file for SolidWorks.

337
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3
votes
1
answer
Last activity 2016-12-08 19:59:17 +0200 by CurtisHx

PPK: Unable to connect to the ppk, check debugger connection and make sure pynrfjprog is up to date

I'm trying to use the PPK with an nRF51 dev board, and I'm getting this output whenever I try to start the PPK Software:

Checking installed packages
pyside:      1.2.4
pyqtgraph:   0.10.0
numpy:       1.11 ...
(more)

245
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no
votes
2
answers
Last activity 2016-10-26 15:20:56 +0200 by emmgergo

Windows 10 Problem?

I am using the nrf51-dk on windows 10 and I tried to apply the latest mbed bootloader. After I do that and restart the chip, the device seems to mount and dismount repeatedly. I tried to download a simple program ... (more)

130
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no
votes
1
answer
Last activity 2016-10-13 09:55:22 +0200 by Sigurd flag of Norway

Use RTC or app_timer?

Hello, i need to count 1 or 2 minutes. Someone can recommend me if to do that is easier to use app_timer or RTC?

Which is the value that i have to put in the prescaler?

I work with nRF51 ... (more)

332
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Last activity 2016-10-13 04:17:22 +0200 by Mitch996

What are the list of things to mind when porting a project to nRF51 DK Boards?

Hello, this is what I can think of when porting a project, but before that, a little background about my project:

it uses BLE (duh)

it uses uart to print test output

it uses buttons and leds as runtime indication ... (more)

192
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no
votes
1
answer
Last activity 2016-10-05 09:39:59 +0200 by Kristin flag of Norway

How can i see the RSSI value in nRF51 dk?

Im based in the example of SDK12.0 - MULTILINK_CENTRAL and i have to know the RRSI value in dbm if it is possible from the peripheral device that is connected to me but i couldn't do that.

Somebody can ... (more)

265
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3
votes
1
answer
Last activity 2016-09-30 08:54:05 +0200 by Jørgen Holmefjord flag of Norway

SPI pin on nrf51 DK

Hi All,

I have a question about the SPI pin number on nrf51 Dk.

I don't understand when i look into the pca10028.h file, i see this mapping:

#define SPIM0_SCK_PIN       4
#define SPIM0_MOSI_PIN      1
#define SPIM0_MISO_PIN      3
#define ...
(more)

383
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1
vote
1
answer
Last activity 2016-09-29 09:37:25 +0200 by Jørgen Holmefjord flag of Norway

nRF51 GPIO interrupt

Hello,

I am having interface nRF51 with RF receiver. Output of RF receiver connected with GPIO pin of nRF51.

How can I detect interrupt on gpio pin?

Thanks & Regards, Rajneesh

705
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no
votes
1
answer
Last activity 2016-09-26 08:50:40 +0200 by Hakan

Advertising service with 128 bit UUID

Hello everyone,

I have 2 chip; Bluegiga and nRF51-DK

I can easily advertise my custom service in Bluegiga chip. As you can see, nRF Connect application shows my service so that i can scan peripherals with service and connect via ... (more)

141
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no
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answers
Last activity 2016-09-03 08:33:47 +0200 by Rajneesh

nRf905 work as a receiver with nRF51 DK

Hello All,

I am interfacing nRF905 as a receiver mode which are interface with nRF51 DK.

As a transmitter used this module https://www.alibaba.com/product-detai...

Can I receive data from above transmitter in nRF905?

I have ported receiver ... (more)

670
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1
vote
1
answer
Last activity 2016-08-11 12:17:27 +0200 by Võ Thanh Hiếu flag of Viet Nam

Issues with Proximity Example

I tried to get the ble_app_proximity example to work today, with either the nRF51-DK, nRF51-Dongle or nRF52-DK, along with the Nordic Connect app on Android.

I encounter the following issues:

With nRF5 SDK v11, the code size became too large ... (more)

109
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no
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no
answers
Last activity 2016-08-02 05:07:39 +0200 by Filipe

How to configure P0.9 and P0.11 outputs for signal TX and Rx.

I'm trying cominicar me through Termite between the application plate (nRF51-Dk kit) and a device that supports BLE, but the connection between PC and the kit application I am doing through the TX and RX ports. But I can ... (more)

678
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no
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no
answers
Last activity 2016-07-29 03:52:57 +0200 by GrandGogo

Problem with UART DFU

Hi,

I'm trying to test the DFU over HCI included in the SDK examples but I can't make it work. This is all the information of the environment I'm using:

  • SDK: 10.0.0
  • Board: nRF51-DK
  • Softdevice ...
(more)

217
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1
vote
1
answer
Last activity 2016-07-19 11:39:25 +0200 by Øyvind Karlsen flag of Norway

Error: Flash Download failed - "Cortex-M0"

Hi I am getting some weird response from my nRF51-DK.

Situation 1: When I try to flash it with the Blinky code (\sdk11\examples\peripheral\blinky\pca10028\s130\arm5_no_packs) it builds, and flashes successfully. But it does not run the ... (more)

1k
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3
votes
1
answer
Last activity 2016-07-18 08:59:54 +0200 by Terje Schjelderup flag of Norway

problem with RTC counting

Hi guys, I'm facing some trouble to put my rtc working properly. I made a code based on the rtc example but it's not incrementing the time the right way.

Bellow follows my code, it's just to ... (more)

185
views
2
votes
1
answer
Last activity 2016-07-11 14:00:04 +0200 by Øyvind Karlsen flag of Norway

Reset Button

Hello, I just run in following issue. I try to configure an UART to send some bytes. To check the configuration, I just let the program loop, after the sending. Attached an osziloskop to the pin where I've expected ... (more)

252
views
no
votes
1
answer
Last activity 2016-07-07 12:15:07 +0200 by RK flag of Singapore

nRF Blinky mobile application code

In order to teach a class of students using nRF developer boards I'd like to use the nRF Blinky application running on Android, iOS, or whatever mobile platform. The problem is that we don't have the source code ... (more)

300
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no
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answers
Last activity 2016-07-04 17:25:01 +0200 by Ajaysaini58

I have programmed nrf51-dk with mbed as well as Kiel but there is a difference

I have programmed nrf51-dk with an example code available at mbed platform,everything works fine except that the ble is visible even if we open bluetooth menu.It is scanned and in the bluetooth scan list. I had read somewhere ... (more)

177
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1
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no
answers
Last activity 2016-06-30 12:03:12 +0200 by Võ Thanh Hiếu flag of Viet Nam

Strange behavior Button 2 and Button 3 on nRF51 DK

Updates are moved to the end of the question

I created a modified version of pca10028.h and boards.h and have preprocessors changed so that the following new config is loaded:

// Custom LEDs definitions for PCA10028
#define LEDS_NUMBER    1 ...
(more)

286
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no
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no
answers
Last activity 2016-06-20 11:39:50 +0200 by Chris Shaw

nRF51-DK mBed code not working on nRF51822 custom hardware (but using nRF51822-mkit target half-works...)

Question for anyone familiar with mBed code on nRF51 devices (I have cross posted on mBed, but trying my luck here too):

I'm developing an nRF51822 program using the nRF51-DK dev kit which claims to support development for both ... (more)

495
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2
votes
1
answer
Last activity 2016-06-16 18:32:32 +0200 by jtrovato

Moving from nRF51 DK to nRF51822 custom board

Screen Shot 2016-06-16 at 10.27.56 AM.png(/attachment/41972e0db37f912bba4731a3b5ffe839)(/attachment/0838bef738e72c89e2a9af90d6e3f640)(/attachment/a62ce68db8c9d23b285a9f94a5c9beac)I have been developing on the nRF51 DK for some time with no trouble. I am using nRFgo studio to erase and flash softdevice s130. I am using uVision for development and flashing applications ... (more)

445
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no
answers
Last activity 2016-06-10 12:47:15 +0200 by RichieJH flag of United Kingdom

nRF51 DK soft devices examples not working

Hi,

I have an nRF51 DK, found here https://www.nordicsemi.com/eng/Produc.... I am using SDK V11.0 and S130 V2.0. I am developing on a Linux machine.

I can compile and run the blinky example successfully ... (more)

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